1/2″ thick round spacer with 1-1/8″ OD and 1/8″ ID.
Plastic 7/8″ thick drawer slide spacer with 1/4″ holes 32mm apart.
1/2″ Thick Drawer Slide Spacer With 1/4″ Holes 32mm Apart
Plastic 1-3/4″ thick undermount drawer slide spacer.
1″ Thick drawer slide spacer with two 1/4″ holes spaced 32mm apart.